John has tried many ways to solve the physics problems, but _______ works.

Have you seen the film “Titanic”, ______ leading actor is world-famous?

Was      Bill      played football well      helped the blind man cross the street?

Remember everybody you meet online is a stranger．So when you can’t see a person, they could be ________．

. The manager believed price will not rise by more than         four percent.

He admitted that when ____ comes to repairing a computer, he had little knowledge of it ．
A．he     B．that B．this   D．it

_____ is commonly believed that the play was written by Shakespeare.

Out of__________ did the cat come and then it ran across the yard.

Mobile phones and the internet have made__________ simple to contact a friend, relative or colleague wherever they are in the world
A. that            B. this             C. them            D it

The professor spoke so fast that I found        him.